Depends about looks. Air tight plastic container (but not made from thin polyethylene) and some silica gel doesn't cost much and is pretty good for long term storage. Good quality humidor (with propylene glycol switched to silica gel) will cost several hundreds and climate chamber several thousands.

This one is out of Taiwan. It cost me about $100 US although there were cheaper options out of China. I'm in mainland China and I don't know how prices for these kind of things compare overseas. Most electronics like cameras, lenses, computers etc are much more expensive here (for the real thing) than in the States but that's generally due to import tax.

I only started using a digital camera last year August and while the humidity was really high, I didn't worry about it as I only had a couple of lenses that I was using everyday. It's getting pretty bad already here though so with more lenses, I thought I better not take any chances. We can mould growing up the walls here. I agree with quezra that it's pretty much a necessity.

The box is 68 litres. The 2 shelves slide out and theres a simple locking mechanism. It took about a day but now the humidity level is at 40% which I think is fine. I really didn't need this size for the camera equipment I own but I doubt I will have less lenses a year from now.

You can see in my sig what I have. The wife thinks I picked up the used 5n with kit for her.